New 90 Brougham D'Elegance owner with questions
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RWD 19xx-1984 DeVille and Fleetwood,
1985-1996 Fleetwood and Brougham Forum Discussion, New 90 Brougham D'Elegance owner with questions in Past Cadillac Vehicle Discussion; This is my First Cadillac and first GM product ever owned. From what little research I've done, the car has ...
  1. #1
    bikertrash3531 is offline Cadillac Owners Member
    Automobile(s): 1990 Brougham D' Elegance
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    south west Missouri
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    New 90 Brougham D'Elegance owner with questions

    This is my First Cadillac and first GM product ever owned. From what little research I've done, the car has the Chevy 5.7L 350cid V8 with a 4L60E Automatic.

    First thing is, my digital fuel gauge is not working. Where do I need to look for the problem and how available are the parts? Also, where can I find the bumper/ tail light filler pieces and the piece for the rear license plate/ fuel door? Everything else seems to work fine minus the factory CD player which will probably get an aftermarket unit soon enough. Lastly, where on the car can I find a code to tell me what gearing I have in the differential?
    Thanks in advance,
    BT

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  3. #2
    Cadillac Giovanni's Avatar
    Cadillac Giovanni is offline Cadillac Owners Enthusiast
    Automobile(s): 86 DeVille (RIP), 89 Brougham D'Elegance, 95 FWB
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    Re: New 90 Brougham D'Elegance owner with questions

    Hey, welcome to the board!

    The fuel gauge problem is a toughie. Could be the sender or the wiring, but I've heard that the dashboards themselves are prone to failure. Is it just reading full all the time, or showing empty?

    I bought my replacement fillers from http://www.steelerubber.com/, and they're pretty good. They also have great quality weatherstripping if you ever need it.

    Not sure about the diff. Someone else probably knows for sure.

  4. #3
    cadillac kevin's Avatar
    cadillac kevin is offline Cadillac Owners Master
    Automobile(s): chevy 350 powered 86 FWB, 00 safari h.t. 66 toro, 83 lesabre
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    Quote Originally Posted by Cadillac Giovanni
    Hey, welcome to the board!

    The fuel gauge problem is a toughie. Could be the sender or the wiring, but I've heard that the dashboards themselves are prone to failure. Is it just reading full all the time, or showing empty?

    I bought my replacement fillers from http://www.steelerubber.com/, and they're pretty good. They also have great quality weatherstripping if you ever need it.

    Not sure about the diff. Someone else probably knows for sure.
    check the SPID on the right side of the trunk lid for the RPO for the rear end. GU_ is the rear end ratio while G80 is posi, IIRC

  5. #4
    bikertrash3531 is offline Cadillac Owners Member
    Automobile(s): 1990 Brougham D' Elegance
    Join Date
    Apr 2013
    Location
    south west Missouri
    Age
    36
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    Re: New 90 Brougham D'Elegance owner with questions

    Thanks for the quick replies! It looks as if the gauge is reading full at all times. Also thanks for the link on the fillers. I will post a pic of the gauge asap to confirm that it is reading full.
    BT

  6. #5
    jayoldschool's Avatar
    jayoldschool is offline GM RWD V8 addict
    Automobile(s): 81 FWB D'Elegance coupe
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    Re: New 90 Brougham D'Elegance owner with questions

    Gas gauge is likely broken ground at the tank.

  7. #6
    brougham is offline Cadillac Owners Master
    Automobile(s): 1991 Cadillac Brougham D'Elegance 5.7 Litre
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    Re: New 90 Brougham D'Elegance owner with questions

    Check the wiring for the fuel guage from the sender. The digital dashes are prone to problems but usually if that was it the guage wouldn't light up at all or it light up different segments and flash around a bit. It's more common for the odometers to go out.

    There was no options when it came to gears it went by engine. 5.7 was the towing package so it's probably a 3.08.

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